Killing Floor 2 is a first-person shooter video game developed by Tripwire Interactive. It is a sequel to the 2009 video game Killing Floor. An early access version of the game was released for Microsoft Windows via digital distribution service Steam on April 21, 2015. The full version is scheduled for release in 2016 on Windows, Linux, and PlayStation 4. The game utilizes a heavily modified version of Epic Games’ Unreal Engine 3.